DocumentCode :
1964541
Title :
Estimation of COMPASS on-board clock short-term stability
Author :
Gong Hang ; Ni Shaojie ; Mou Weihua ; Zhu Xiangwei ; Wang Feixue
Author_Institution :
Satellite Navig. R&D Center, Nat. Univ. of Defense Technol., Changsha, China
fYear :
2012
fDate :
23-27 April 2012
Firstpage :
383
Lastpage :
386
Abstract :
The short-term frequency stability estimation of GNSS on-board clocks is very important for clock modeling and prediction. Orbit Determination and Time Synchronization (ODTS) method is commonly used to estimate the clock offset, which needs continuous observation by large monitoring ground network and complicate algorithms. COMPASS is on its early stage of construction and has not globally distributed station network for satellites tracking. In this paper, we have analyzed an estimation method based on a single monitoring station observation. Based on this method, a simple method for COMPASS MEO/IGSO on-board clocks estimation using smoothed broadcast ephemeris is presented, and a method for COMPASS GEO on-board clocks estimation using satellite radio ranging (SRR) is also discussed. At the end of this paper, the preliminary estimation results for COMPASS IGSO and GEO on-board clocks by these two methods are presented.
Keywords :
clocks; frequency stability; satellite navigation; satellite tracking; synchronisation; time measurement; COMPASS GEO on-board clocks estimation; COMPASS IGSO; COMPASS estimation; GNSS; ODTS; clock modeling; globally distributed station network; on-board clock short term stability; orbit determination and time synchronization method; satellite radio ranging; satellites tracking; short-term frequency stability estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
European Frequency and Time Forum (EFTF), 2012
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-1924-9
Type :
conf
DOI :
10.1109/EFTF.2012.6502407
Filename :
6502407
Link To Document :
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